Stuck In The Past With Socket 754! Help!

[oHUTCHYo]

Hi all, I have a dilemma and need a way out!

Heres my current Socket 754 setup;

Athlon 64 3400+ (Socket 754)
1.5GB Corsair 3200 C2 DDR
ATI Radeon X800 XT PE (AGP)

So heres the tricky bit, this PC is primarily a gaming machine, I have a budget of maybe £350 max. What are my best options for a gaming rig?

I was thinking of;

Athlon X2 4800+ Dual Core
Asrock 939 Dual-SATA2 (AGP + PCI-E)
Keep existing X800 XT PE and Corsair RAM
(Might keep me going until I get a DX10 PCI-E card)

I cant really go for the AM2 sockets because I would need to buy a new PCI-E gfx card and also DDR2 memory!

Anyone else got any ideas?

 

[oHUTCHYo]

Thanks your help Kiz, say I went for a single core 3700+, what graphics card would sit nice with it (i.e. not bottlenecked due to the CPU)

So these dual cores arent any good for games? I sort of worked that out already from reading other peoples threads, it might be worth just going single core then

EDIT: Just wondering, does AM2 require DDR2 memory or is it backward compatible with DDR?

 

[oHUTCHYo]

How about this guys?

OcUK MSI GeForce 7900 GTO SILENT 512MB GDDR3 TV-Out/Dual DVI (PCI-Express) - Retail (GX-041-OK)
£180.94 Including VAT at 17.5%

AMD Athlon 64 3700+ San Diego (Socket 939) - Retail (CP-121-AM)
£88.11 Including VAT at 17.5%

Motherboard please? Dont need any fancy extras, just sold gaming performance, cheap would be nice too lol